I see both sides on this one. It would be great to have someone who can stretch the defense and make teams pay for collapsing in the lane, but as Brick says, Bonzi/Artest presents a matchup nightmare because teams can't just stick their strong guy on Artest and their finesse guy on Bonzi -- someone's going to get bruised inside. At the same time, there isn't a guy in the league who can really handle Artest down low, and an outside shooter might take some pressure off Ron and allow him to operate more freely.
Bonzi's not great at playing off the ball and he's not a great passer, so he and Artest together have a tendency to stall the offense. I'm not so sure the benefit of having a matchup problem makes for a better offense than having a consistent outside shooter at teh 2. And yet I'd rather have Bonzi than someone like Raja Bell, because Bonzi brings intangibles. Basically, short of Ray Allen or someone of his ilk or a big man through a S&T, I'd take Bonzi.